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ER/L-NPT : External NPT (National Pipe Threads) full profile laydown threading inserts. ER/L - ground periphery and rake, ERB - with a chipformer and peripherally ground, ERM - with a chipformer. Used for steam, gas and water pipes.(-)External NPT (National Pipe Threads) Full Profile Laydown Threading Inserts for Steam, Gas and Water Pipes(+)
Representative Image
External right-hand shown
 
Representative Image
External right-hand shown
 
 NPT (EXT.)THREAD TOL.
  Designation  GIFUT5IC TPI  RE INSL PDY PDX HAND CICT  SC AN CBMD CEDC CNC COATP D1 FTDZ GRDMFG IFS NIS S S1 SSC  THFT TP mm   GICATGIREMgiicTough ‹————› Hard
Grade & Vc     Click on Grade No. for Cutting Speed
  16ER 27 NPT    0.37527.0.0016.649.03.03R~1T~~EXT~.0~Z~3~3~~.000~~IC250 ~3~1~.000~~16~NPT60~-~Steel~Stainless Steel~Cast Iron~Hard Materials~Superalloys and titanium~Carbide~TiAlN ~5991737 2IC250 IC908 
  16ER 18 NPT    0.37518.0.0024.649.03.04R~1T~~EXT~.0~Z~3~3~~.000~~IC1007~3~1~.000~~16~NPT60~-~Steel~Stainless Steel~Cast Iron~Hard Materials~Superalloys and titanium~Carbide~TiAlN ~5902359 4IC228 IC250 IC908 IC1007 
  16ERB 18 NPT      0.37518.0.0024.649.04.04R~1T~~EXT~.0~B~3~3~~.000~~IC908 ~3~1~.000~~16~NPT60~-~Steel~Stainless Steel~Cast Iron~Hard Materials~Superalloys and titanium~Carbide~TiAlN ~5902822 With pressed chipformer 1IC908 
  16ERM 18 NPT      0.37518.0.0020.649.03.04R~1T~~EXT~.0~B~3~3~~.000~~IC1007~3~1~.000~.000~16~NPT60~-~Steel~Stainless Steel~Cast Iron~Hard Materials~Superalloys and titanium~Carbide~TiAlN ~5903397 With pressed chipformer 3IC808 IC908 IC1007 
  16EL 14 NPT    0.37514.0.0027.649.04.05L~1T~~EXT~.0~Z~3~3~~.000~~IC908 ~3~1~.000~~16~NPT60~-~Steel~Stainless Steel~Cast Iron~Hard Materials~Superalloys and titanium~Carbide~TiAlN ~5902122 1IC908 
  16ER 14 NPT    0.37514.0.0027.649.04.05R~1T~~EXT~.0~Z~3~3~~.000~~IC1007~3~1~.000~.000~16~NPT60~-~Steel~Stainless Steel~Cast Iron~Hard Materials~Superalloys and titanium~Carbide~TiAlN ~5999136 4IC228 IC250 IC908 IC1007 
  16ERB 14 NPT      0.37514.0.0027.649.04.05R~1T~~EXT~.0~B~3~3~~.000~~IC908 ~3~1~.000~~16~NPT60~-~Steel~Stainless Steel~Cast Iron~Hard Materials~Superalloys and titanium~Carbide~TiAlN ~5902823 With pressed chipformer 1IC908 
  16ERM 14 NPT      0.37514.0.0020.649.04.05R~1T~~EXT~.0~B~3~3~~.000~~IC1007~3~1~.000~~16~NPT60~-~Steel~Stainless Steel~Cast Iron~Hard Materials~Superalloys and titanium~Carbide~TiAlN ~5921174 With pressed chipformer 5IC50M IC250 IC808 IC908 IC1007 
  16EL 11.5 NPT    0.37511.5.0035.649.04.06L~1T~~EXT~.0~Z~3~3~~.000~~IC908 ~3~1~.000~~16~NPT60~-~Steel~Stainless Steel~Cast Iron~Hard Materials~Superalloys and titanium~Carbide~TiAlN ~5902270 1IC908 
  16ER 11.5 NPT    0.37511.5.0035.649.04.06R~1T~~EXT~.0~Z~3~3~~.000~~IC1007~3~1~.000~.000~16~NPT60~-~Steel~Stainless Steel~Cast Iron~Hard Materials~Superalloys and titanium~Carbide~TiAlN ~5901814 4IC50M IC250 IC908 IC1007 
  16ERB 11.5 NPT      0.37511.5.0035.649.04.06R~1T~~EXT~.0~B~3~3~~.000~~IC908 ~3~1~.000~~16~NPT60~-~Steel~Stainless Steel~Cast Iron~Hard Materials~Superalloys and titanium~Carbide~TiAlN ~5902825 With pressed chipformer 1IC908 
  16ERM 11.5 NPT      0.37511.5.0035.649.04.06R~1T~~EXT~.0~B~3~3~~.000~~IC1007~3~1~.000~.000~16~NPT60~-~Steel~Stainless Steel~Cast Iron~Hard Materials~Superalloys and titanium~Carbide~TiAlN ~5920039 With pressed chipformer 4IC250 IC808 IC908 IC1007 
  16ER 8 NPT    0.3758.0.0047.649.05.06R~1T~~EXT~.0~Z~3~3~~.000~~IC250 ~3~1~.000~~16~NPT60~-~Steel~Stainless Steel~Cast Iron~Hard Materials~Superalloys and titanium~Carbide~TiAlN ~5994242 3IC50M IC250 IC908 
  16ERB 8 NPT      0.3758.0.0043.649.06.07R~1T~~EXT~.0~B~3~3~~.000~~IC908 ~3~1~.000~~16~NPT60~-~Steel~Stainless Steel~Cast Iron~Hard Materials~Superalloys and titanium~Carbide~TiAlN ~5902826 With pressed chipformer 1IC908 
  16ERM 8 NPT      0.3758.0.0047.649.05.07R~1T~~EXT~.0~B~3~3~~.000~~IC1007~3~1~.000~.000~16~NPT60~-~Steel~Stainless Steel~Cast Iron~Hard Materials~Superalloys and titanium~Carbide~TiAlN ~5920082 With pressed chipformer 4IC250 IC808 IC908 IC1007 
  22ER 11.5 NPT 2M      0.50011.5.0035.866.09.14R~2T~~EXT~.0~Z~3~3~~.000~~IC908 ~3~1~.000~~22~NPT60~-~Steel~Stainless Steel~Cast Iron~Hard Materials~Superalloys and titanium~Carbide~TiAlN ~5902446 Multi-tooth 1IC908 
  27ER 11.5 NPT 3M      0.62511.5.00351.083.13.22R~3T~~EXT~.0~Z~3~3~~.000~~IC908 ~3~1~.000~~27~NPT60~-~Steel~Stainless Steel~Cast Iron~Hard Materials~Superalloys and titanium~Carbide~TiAlN ~5902447 Multi-tooth 1IC908 
  27ER 8 NPT 2M      0.6258.0.00471.083.12.19R~2T~~EXT~.0~Z~3~3~~.000~~IC908 ~3~1~.000~~27~NPT60~-~Steel~Stainless Steel~Cast Iron~Hard Materials~Superalloys and titanium~Carbide~TiAlN ~5902449 Multi-tooth 1IC908 
For Insert Identification System, click on "More Info".
For threading between walls use GRIP-type insert TIP-NPT.
National Pipe Threads ANSI/ASME B1.20.1-1983


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